{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1992:IIYMNC2NAPELLBX4UG3GCI74B6","short_pith_number":"pith:IIYMNC2N","canonical_record":{"source":{"id":"hep-th/9207095","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"1992-07-29T03:53:55Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"e79737e45b9d9f1753fa266a390183615154c081fb5933cc3d11b9624ea45103","abstract_canon_sha256":"c29ec0532c27c332c6e0bb1c7f46a7f469b1a226a700004f2e6401487f54e085"},"schema_version":"1.0"},"canonical_sha256":"4230c68b4d03c8b586fca1b66123fc0f8bb477090682cbe440deec605838f494","source":{"kind":"arxiv","id":"hep-th/9207095","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/9207095","created_at":"2026-05-18T04:37:43Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/9207095v2","created_at":"2026-05-18T04:37:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/9207095","created_at":"2026-05-18T04:37:43Z"},{"alias_kind":"pith_short_12","alias_value":"IIYMNC2NAPEL","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"IIYMNC2NAPELLBX4","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"IIYMNC2N","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1992:IIYMNC2NAPELLBX4UG3GCI74B6","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/9207095","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"1992-07-29T03:53:55Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"e79737e45b9d9f1753fa266a390183615154c081fb5933cc3d11b9624ea45103","abstract_canon_sha256":"c29ec0532c27c332c6e0bb1c7f46a7f469b1a226a700004f2e6401487f54e085"},"schema_version":"1.0"},"canonical_sha256":"4230c68b4d03c8b586fca1b66123fc0f8bb477090682cbe440deec605838f494","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:37:43.959668Z","signature_b64":"cwZDn2QCW3baIwc15oQFhrE6molKkUjDQidiUne9AFkQkU/panU0k51kf9MlwwmiXkKy4hiNG9u1X7tZ+JwHDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4230c68b4d03c8b586fca1b66123fc0f8bb477090682cbe440deec605838f494","last_reissued_at":"2026-05-18T04:37:43.959172Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:37:43.959172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/9207095","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:37:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"efJeBIn2+htqBUhKHxlOMRGkb+s2eJLP6aaoZ7vm8KboFABBCi2wSTpxksLbZ1M1W3YPXzeF0RVu/3WGNp8MCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T04:38:07.991582Z"},"content_sha256":"8d3695c5af14a03828b109316e8d583c8c895998b7eb741c57799328f5203917","schema_version":"1.0","event_id":"sha256:8d3695c5af14a03828b109316e8d583c8c895998b7eb741c57799328f5203917"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1992:IIYMNC2NAPELLBX4UG3GCI74B6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Black Holes in Two Dimensions","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"S. P. de Alwis","submitted_at":"1992-07-29T03:53:55Z","abstract_excerpt":"We show that a whole class of quantum actions for dilaton-gravity, which reduce to the CGHS theory in the classical limit, can be written as a Liouville-like theory. In a sub-class of this, the field space singularity observed by several authors is absent, regardless of the number of matter fields, and in addition it is such that the dilaton-gravity functional integration range (the real line) transforms into itself for the Liouville theory fields. We also discuss some problems associated with the usual calculation of Hawking radiation, which stem from the neglect of back reaction. We give an "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9207095","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:37:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hLvvC5fVSgmOWQAs0hUSQzlvt6hxAowb8/kLj2MdNphHjB7lMqnu8lVrCuMyuOwW+ExH7iptWS6eozNZ4OewDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T04:38:07.991915Z"},"content_sha256":"f56238c996ef8d6b76e876b104c20a3bdd567ce12d4091ab57767c093e89df64","schema_version":"1.0","event_id":"sha256:f56238c996ef8d6b76e876b104c20a3bdd567ce12d4091ab57767c093e89df64"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IIYMNC2NAPELLBX4UG3GCI74B6/bundle.json","state_url":"https://pith.science/pith/IIYMNC2NAPELLBX4UG3GCI74B6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IIYMNC2NAPELLBX4UG3GCI74B6/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-28T04:38:07Z","links":{"resolver":"https://pith.science/pith/IIYMNC2NAPELLBX4UG3GCI74B6","bundle":"https://pith.science/pith/IIYMNC2NAPELLBX4UG3GCI74B6/bundle.json","state":"https://pith.science/pith/IIYMNC2NAPELLBX4UG3GCI74B6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IIYMNC2NAPELLBX4UG3GCI74B6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1992:IIYMNC2NAPELLBX4UG3GCI74B6","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c29ec0532c27c332c6e0bb1c7f46a7f469b1a226a700004f2e6401487f54e085","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"hep-th","submitted_at":"1992-07-29T03:53:55Z","title_canon_sha256":"e79737e45b9d9f1753fa266a390183615154c081fb5933cc3d11b9624ea45103"},"schema_version":"1.0","source":{"id":"hep-th/9207095","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/9207095","created_at":"2026-05-18T04:37:43Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/9207095v2","created_at":"2026-05-18T04:37:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/9207095","created_at":"2026-05-18T04:37:43Z"},{"alias_kind":"pith_short_12","alias_value":"IIYMNC2NAPEL","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"IIYMNC2NAPELLBX4","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"IIYMNC2N","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:f56238c996ef8d6b76e876b104c20a3bdd567ce12d4091ab57767c093e89df64","target":"graph","created_at":"2026-05-18T04:37:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We show that a whole class of quantum actions for dilaton-gravity, which reduce to the CGHS theory in the classical limit, can be written as a Liouville-like theory. In a sub-class of this, the field space singularity observed by several authors is absent, regardless of the number of matter fields, and in addition it is such that the dilaton-gravity functional integration range (the real line) transforms into itself for the Liouville theory fields. We also discuss some problems associated with the usual calculation of Hawking radiation, which stem from the neglect of back reaction. We give an ","authors_text":"S. P. de Alwis","cross_cats":["gr-qc"],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"1992-07-29T03:53:55Z","title":"Quantum Black Holes in Two Dimensions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9207095","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8d3695c5af14a03828b109316e8d583c8c895998b7eb741c57799328f5203917","target":"record","created_at":"2026-05-18T04:37:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c29ec0532c27c332c6e0bb1c7f46a7f469b1a226a700004f2e6401487f54e085","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"hep-th","submitted_at":"1992-07-29T03:53:55Z","title_canon_sha256":"e79737e45b9d9f1753fa266a390183615154c081fb5933cc3d11b9624ea45103"},"schema_version":"1.0","source":{"id":"hep-th/9207095","kind":"arxiv","version":2}},"canonical_sha256":"4230c68b4d03c8b586fca1b66123fc0f8bb477090682cbe440deec605838f494","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4230c68b4d03c8b586fca1b66123fc0f8bb477090682cbe440deec605838f494","first_computed_at":"2026-05-18T04:37:43.959172Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:37:43.959172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cwZDn2QCW3baIwc15oQFhrE6molKkUjDQidiUne9AFkQkU/panU0k51kf9MlwwmiXkKy4hiNG9u1X7tZ+JwHDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:37:43.959668Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/9207095","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d3695c5af14a03828b109316e8d583c8c895998b7eb741c57799328f5203917","sha256:f56238c996ef8d6b76e876b104c20a3bdd567ce12d4091ab57767c093e89df64"],"state_sha256":"99cf99e1d8a289db58a2a83675a5393ea7370fd6e68c1f9152ab85c4c095c85d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hHq1M5X4jtI97asRxtfGmWCl1LbIugNB3P6jnnEm6lN/QD1kLvQ0G7SmlLI9Ak07S6r+xxZEGeTfLbKFbWkPAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T04:38:07.993743Z","bundle_sha256":"ea5289d561ed48b95af835428213e0f36d9928d1251ae7cb6879a3e884fc850f"}}